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Epilepsy - Exams and Tests

Making the correct diagnosis is vital to identifying the appropriate treatment to control seizures.

Diagnosing epilepsy can be quite difficult. When you consult a doctor after you or your child has had unexplained seizures, you and the doctor will work together to answer three questions:

  • Was the event a seizure, or was it something that looked like a seizure? Several conditions can appear to be seizures but are not in fact seizures. (These might include breath-holding spells, migraine headaches, muscle twitches or tics, sleep disorders, or psychogenic seizures.) Taking antiepileptic medicines to treat nonepileptic seizures can expose you or your child to unnecessary risks.
  • If you are having seizures, are the seizures caused by epilepsy? Not everyone who has a seizure has epilepsy. The seizure may have been caused by something else (such as fever, certain medicines, an electrolyte imbalance, or inhaling fumes). Taking antiepileptic medicines when you do not have epilepsy may put you at unnecessary risk from possible side effects.
  • If you have or may have epilepsy, what types of seizures are you having? The different types of epileptic seizures (partial and generalized) are not treated in the same way or with the same medicines. For example, some medicines that control complex partial seizures may make absence seizures worse.

A physical exam and detailed medical history often provide the best clues as to whether you have epilepsy and what type of epilepsy and seizures you have. Discussing what happens to you just before, during, and right after a seizure can help the doctor make a diagnosis.

Your doctor may want to rule out other possible causes for the seizures with other laboratory tests, which may include:

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